Pipe-coupling



1 3o a perspective view j* proved coupling.

f.- 4o thread.

NITED TATES n' ATENT Erice. i

JOHN FRANK DlLL AND SAMUEL A. ROTE, OF RIDGNVAY,PENNSYLVANIA.

r SPECIFICATION forming part of Letters Patent No.

396,550,01atd January 22, 1889.

.i j Application filed August 6, 1888. Serial No. 282.114. (No model.)

To afZ/Z whom it may concern: t Be it known that we, JOHN FRANK DILL and SAMUEL A. ROTE, of Ridgway, in the county of Elk and State of Pennsylvania, have inl 5 vented a certain new and useful improvement. incouplings for steam, water, gas, and air pipes where the screw mode oi' making the connection is used; and we do hereby declare the following to be a Jfull and exact descrip- Io tion ot the construction and operation ot the 1 same, reference being had to the accompanying drawings and letters of reference marked s thereon, the same letters referring to like parts. I 5 Our invention relates to an in'iprovement in pipe-couplings adapted to couple steam and air pipes between railroad-cars, and for other analogous purposes; and it lconsists iu j the peculiar construction and combinationof devices that will be more fully set torth'hcre- .inafterg' and'speciiically pointed out in the u appended4 claim. n

' The objects ot' our invention are to provide a cheap and simple pipe-coupling, which can be readily operated without the use ot tongs or wrenches, and which shall be strong and durable, thoroughly etli cient, and not likely to j. get out of order.

In the accompanying drawings, Figure l is ot' one member of our iin- Fig. 3 is a longitudinal sectional view of a pair ot' such members coupled together.

The members ot the coupling are dupli- 'T- 35 cates; hence it will only be necessary to def: scribe one of them in the specification.

- A represents apipe ot' suitable length,which has its outer end enlarged slightly in dif ameter and provided with an exterior screw- A shoulder, o, is thereby vformed at the inner end of the threaded portion ot the sleeve or nut which tubuwith an interior screwthread adapted to engage the threaded end of the pipe A, and at the inner end ot the said j nut or sleeve is an annular inwardly-extending shoulder, b, adapted to come in contact with the shoulder a, and thereby prevent the nut from working forward oft the threaded end ot 5o the pipe. The nut or sleeve is provided with a hand-wheel, B, by means of which it maybe readily turned and worked forward or rearward on the pipe, as will be understood.

C represents a collar, which is shrunk on the pipe at a suitable distance from its threaded extremity, and is provided with a hand-wheel, by means of which the pipe maybe readily held or rotated.

D represents a coiled extensile spring,which is arranged on the pipe A, and bears between the opposing ends ofthe nut or sleeve B and the collar C, the function ot the spring being to normally torce the sleeve or nut outward and prevent it from wor-king toward the collar.

In order to effect a coupling, the two pipes A ar'e larranged with their outer ends in contact. One of the nuts or sleeves is run inward on its pipe against the tension of its spring D, and the other nut or sleeve is run outward on its pipe and caused to engage the threaded portion of the opposing pipe, and thereby lock the pipes together. The two nuts or sleeves are jammed together to add to the security of the joints. The springs prevent the nuts from working apart and loosening the joint between the pipes.

Having thus described our invention, we claim and desire to secure by Letters Patent of the United States- 8o The combination of the pipes A, having the threaded portions at their meeting ends and having the shoulders a, the collars O, secured to said pipes, the interiorly-threaded sleeves or nuts E, engaging the threaded portions of the pipes and having the shoulders l) at their inner ends, tor the purpose set forth, one of said sleeves or nuts engaging both pipes and serving to couple the same, and the other nut being jammed against the coupling-nut, and the coiled extensile springs arranged on the pipes and bearing between the collars O and the sleeves or nuts, substantially as described. JOHN FRANK DlLL.

SAMUEL A. ROTE.

Witnesses:

I. D. BELL, N. T. ARNOLD. 

